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    UPD9991 Search Results

    UPD9991 Datasheets (2)

    Part ECAD Model Manufacturer Description Curated Type PDF
    UPD9991 NEC 64 chords,up to 68 tones can be played simultaneously Original PDF
    UPD9991F9-BA1 NEC 64 chords,up to 68 tones can be played simultaneously Original PDF